Finding the Fourth Proportional to 9,621.90, 14,434.71 and 3,698.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621.90 : 14,434.71 = 3,698.34 : x
2. Step 2: Convert to fraction form
   9,621.90/14,434.71 = 3,698.34/x
3. Step 3: Cross multiply
   9,621.90x = 14,434.71 × 3,698.34
4. Step 4: Simplify right side
   9,621.90x = 53,384,465.38
5. Step 5: Solve for x
   x = 53,384,465.38/9,621.90
6. Step 6: Final answer
   x = 5,548.22